Lymph Nodes (Lymph Glands)

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Numerous small organs distributed along the length of the lymph vessels. Lymph nodes play a major role in protecting the body from disease. Foreign substances (antigens) are removed from the body within the lymph nodes by way of the immune response. Lymphocytes and macrophages are located in the lymph nodes where they are in prime position to encounter and destroy antigens. Lymph nodes are a major site of HIV infection.